Shares of Priceline Group Inc. fell after the online travel company cut forecasts for growth in hotel bookings. TripAdvisor Inc. shares initially swooned after it also said revenue growth would slow, but rebounded by the end of the trading day.

The U.S. will assert its engagement with Asia on regional security at a summit this weekend, at a moment when the Trump administration’s “America first” approach and withdrawal from a Pacific trade pact have unnerved allies.